METHOD OF PREPARING CIS-1,4-POLYBUTADIENES

• Main Authors: BURGANOV T.G, MUSTAFIN KH.V, ZOLOTAREV V.L, SMIRNOVA L.V, ZIJATDINOV A.SH, GIL'MUTDINOV N.R, KUROCHKIN L.M, KROPACHEVA E.N, RJAZANOV JU.I, BOREJKO N.P, POGREBTSOV V.P, ANTIPOV S.N, GALIEV R.G, SAKHABUTDINOV A.G
• Format: Patent
• Language: English; Russian
• Published: 20.10.2000
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

organic chemistry. SUBSTANCE: described is method of preparing cis-1,4-polybutadiene by polymerization of butadiene-1,3 in hydrocarbon solvent in the presence of catalyst comprising cobalt compound, alkylaluminium chloride and water using low-temperature treatment of components. Process is carried out in the presence of alkylsubstituted butadiene in amount of 4-35 mole % based on sum of butadiene and alkylsubstituted butadiene. Butadiene and alkylsubstituted butadiene are first prepared in solution of butadiene and aliphate hydrocarbon containing water with toluene content of 2.2- 2.7 vol. % per mixture of solvents and volumetric ratio of alkylsubstituted butadiene to toluene from 0.4 to 3.2. EFFECT: frost-resistant desired product. 8 ex